Bridge mold



Jan. 19, 1932. F. w. FOLEY BRIDGE M Filed z- 13, 1951 Patented Jan. 19, 1932 FRANK W. FOLEY, F DOLLAR BAY, MICHIGAN BRIDGE MOLD I Application filed August 13, 1931. Serial No. 556,924.

My invention relates to an improved bridge mold designed primarily for molding copper to lessen the amount of set on the-molded body; to materially reduce the period of planing or milling operation to'remove theset. such operation being termed scalping; to expedite production at a decrease in production costs; and to attain these ends in a strong,

durable, compact, thoroughly eificient' and;

' I 'tion throughout from the flat marginal porcomparatively inexpensive structure.

To the above ends essentially my invention consists of such partsand in such combina-' tion of parts as fall within-the scope of the invention as claimed. I

1n the drawings: I

Figure 1 is a perspective view of a mold in accordance with this invention.

Figure 2 is a longitudinal sectional view thereof.

Figure 3 is a section on line 3-3 Figure 2. Figure 4: is a fragmentary view of the mold in top plan.

The molding cavity or chamber can be of any suitable dimensions and contour, is shown as being of rectangular form having its length materially greater than its width and height.

The mold is formed of a body section 1 and gate section 2 and the former comprises a pair of end walls 3, 4, a pair of side walls 5,

* 6, and a bottom 7 preferably integrally connected with each other. The height, thickness and length of the end walls, the height,

thickness and width of the side walls and I, the length, thickness and width of the bottom can be as desired. The side and end walls and the bottom provides the molding cavity or chamber 8. The inner face of each end wall and each side wall at the upper portion thereof is rabbeted to provide an endless ridge 9 and an endless shoulder 10. The

ieight of the shoulder being greater than the Width of the ledge.

The gate section 2 includes a rectangular base part 11 formed at its longitudinal median with an elongated rectangular slot 12 lhe molding cavity which has its end walls arranged in close proximity to the ends of base part 11 and is of a length corresponding to the length of 8. The end walls of slot 12 are perpendicular and the side walls oppositely beveled. The outer marginal portion of each side of the lower face of base part 11 is fiat, as indicated at 13, 1 1. The outer marginal portion of each end of the lower-face of base part 11 is flat as indicated at 15, 16. The lower face of base part 11 is oppositely-beveled as at 17, 18. The bevel portions 17, 18 extend at an upward inclinations13,:11 respectively to the side walls of slot '12. The ends of the beveled portions 17, 18 are arranged between the end marginal portions15', 16 thereby providing two pair of oppositely extending shoulders.

ders of each pair are indicated at 17, 18.

The shoul- Each shoulder gradually increases in height from a marginal portion 13 or 14 to a sidewall of the slot 12. The height of base part 11 corresponds to the height of shoulder 10 and when in position seats on ledge 9. The slot 12 provides a gate opening.

The gate section 2 also includes a funnel part 19 of rectangular contour in plan and of less width and greater length than base part 11. The part 19 is integral with part 11 and extends beyond each end of the latter. The sides of part 11 extend laterally from the sides of the part 19, and the latter includes a pair of upstanding side portions 20, 21 and a pair of upstanding end portions 22, 23. The inner faces of said portions are beveled throughout and the bevel extends towards and merges into the top of the side and end walls of the slot. The outer faces of said portions are also beveled throughout.

Nhen the gate section is mounted upon the body section, the flat marginal portions on the lower face of the base part seat on the ledge 9 and the beveled portions 17, 18 extend at an upward inclination from those parts of ledge 9 formed on the side walls 5, 6.

The construction of the gate section facilitates the pouring of the copper. The base part 11 is a very essential feature because when pouring the copper the metal flows from the sides of the molding cavity towards the center thereof and carries the gases contained in the copper in that direction. The gases strive to escape and the only out-let or D them is through the slot l2. This being in the center the gases materially will hasten to this=opening tobe freed ing cavity and resting on the copper, the I, only set on the casting wi l at slot 12. T he where thehot' metal- The gate section will and the insertion into ot'section 2 in sec tion l- TWhatl claimis n 1; A mold comprising a section progate section having azpi rtot' its lower. face, at-the sidesgand ends of the latterremovabl seatingnvithin and upon the sides and ends of saidsb'ody section and having :anothenpart 1'- 1 of'--its' lower face, at the ends of the latter removably seating upon ends of the body section, said gate section pro- '"viding a closure'dior theitop of theibody section, said-gate section having providing agate opening, and said gate section having the remaining part of: its lower face'fornied with oppositely disposed upwardly inclined portions. 2; A moldcomprising a body section providing an open'top molding cavity, and a gate section having a part of its lower face, at the sides and ends of the latter removably seating within and u on the sides and ends of said body section and having another part of its lower face,

at the ends of the latter removably seating upon the top edges of the ends of the body section, said gate section providing a closure for the-top oi: the body section said gate section having a central slot providing a gate opening, and said gate section having the remaining part of its lower face formed with oppositely disposed upwardly inclined portions lengthwise there-oi and extending toward and terminating said slot.

3. A mold comprising a body section providing an open top molding cavity, and a gate'section having a part of its lo vver face, at the sides and ends of the latter removably seating within and upon the sides and ends of said body section and having another of its lower iace,"at the ends of the latter re- 'novably' seatingupon the top edges of the "ends of the bodyjfsection,':said gate section Consequently With 1 the base part-liforming thetop of the moldof the-latter d1sp osed transverse shoulders at the en ciies" "g5 ,heighttowardsa side of :the base part rests will be =1'naterially .a short scalping action,- v

' the section having. a part of: its lower the sides of the ends ofthe body section, said viding; ant-open top -m0lding"cavity,; and a v section having theremannng leading to the top edges of the a central :slot

' w ardly incli neda providing a closure for the top of the body section, said gate section having a central slot roviding a gate opening, and said gate section having the remaining part of its lower face formed with oppositely disposed upwardly inclined portions lengthwise thereot and-extending toward and terminating said slot, said-beveled 'jortions having tl ends terminating adjacent the ends oi the the lower fa e opposit 4 ate section and providing with-two pairs of i ts and each gradually increasmg said slot.

4;. A mold comprising a body section n'oviding an open top, molding cavity, a gate v face, at and-ends of the latter removabiy seating Withinand upon the ,sides and ends of said body, section and having another part of its lower face, at the ends of the latter removably seating upon the top edges gatescction'providlng a closure fOlmtlle; top of the body section, said gatesection having acentralslot providing a gate opening,'s aid gate part of its lower face -.for1nedwith oppositely 1 disposed upwardlyiinclined portions, and said gate section: having ;a..funnel shapedupper. portion 5. A mold comprising abody-section providing an open top moldingmavity, a gate section having a party oi its lowerface, at the sides and e'ndsof the latter removably seating within and upon the sides and ends of said body section and having; another part of its lower face, at the ends of the latter removably seating upon the top edges of the ends of the body section, said gate sec.- tion providing a closure for the top of the body section, said gate section having a contral slot providing a gate opening, said gate section having the. remaining part oi its lower face formed with oppositely disposed upwardly inclined portions lengthwisethereof at and extending toward and terminating said slot, and said gate section having a nelshaped upper portion leading to said sh. o. 6. A. mold comprising a body section providing an open top molding cavity, a j c section having a part of its lower face, at t sides and ends of the latter removably seating within and upon the iides and ends of said body section and having another it of its lower face, at the ends of the latr removably seating upon the top edges of ends of t re body section, said providing a closure for the top (it c section, said gate section having a centslot providing a gate opening, said gate s tion having the remaining part c'f'its lo face formed with oppositely disposed uppor'tions lengthwise thereoi and extending toward and terminating at said slot, said beveled portions having their endsv terminating adjacent the ends of the gate] section and providing the lower face of the latter with two pairs of oppositely disposed transverse shoulders at the ends of said slots and each gradually increasing in height to-' wards a side of said slot, and said gate sec-i tion having a funnel shaped upper portion' leading to said slot.

7. A mold comprising a body section providing an open top molding cavity, and a gate section reniovably seating on the top edge of the body section and extending into the latter and seating against the upper portion of the walls of said cavity, said gate section"; having an opening disposed centrally andlengthwise with respect to the molding cavity. each side wall of said opening having oppo-- sitely inclined portions.

8. A mold comprising a body section pro viding an open top molding cavity, a gate sec; tion removably seating on the top edge of the body section and extending into the latter and seating against the upper portion 0 the walls of said cavity, said gate section hai ing a slot disposed centrally of said molding cavity. and said gate section having a funnel shaped upper portion leading to said slot. 9. A mold comprising a body section profviding an open top molding cavity, a gate sec} tion reniovably seating on the top edge of the body section and extending into the latter and seating against the upper portion of the walls of said cavity, said gate section having a slot disposed centrally of said molding cavity, said sections being of rectangular contour, said slot disposed lengthwse of said gate section, and the latter being of a length to extend beyond the top of the upper ends of said body section.

10. A mold comprisii'ig a body section providing an open top molding cavity, a gate section reinovably seating on the top edge of the body section and extending into the latter and seating against the upper portion of the walls of said cavity, said gate section having a slot disposed centrally of said molding cavity, said gate section having a funnel shaped upper portion leading to said slot, said sections being of rectangular contour, said slot disposed lengthwise of said gate section, and the latter being of a length to extend beyond the top of the upper ends of said body section.

11. A mold comprising a body section providing an open top molding cavity, a gate section seating on the top edge of the body section and extending into the latter and seating against the upper portion of the walls of said ca *it r, said gate section having a slot disposed centrally of said molding cavity, sections being of rectangular contour, said slot disposed lengthwise of said gate sec tion, the latter being of a length to extend beyond the top of the upper ends of said body viding E removableg' one nece gatesection including a erase. slotted" base 5 part ripen *heba'se llsection I and "a funnel ishaped part for s ating on tlie topedges o f the ends 1 of tlre bo'dy section, said base section' forming section, said gate section being of less width tha rsialid body section. v

'12. A mold comprising a body section providing an "open top molding cavity, a gate section seating on the top "edge of the body section and extending into the latter and seating against the upper portion of the walls of said cavity, said-gate section having a slot 'disposed centrally of said molding cavity,

said gate section havinga funnel shaped upper portion'leading to said slot, said sections being'of rectangular contour, said slot disposed'leiigthwise of said gate section, the lat- *.ter'beiiig of-a length to extend beyond the top. of the upperends of said body section,

andsaid gate section being'of less width than said body section. 'l" *niold comprising abody section pron open top molding cavity, and 'a ftli'llll 'slotted base 'part f-or seating J in: and

upon the 'base sec'tion and a funnel shaped part for seating on; the top edges of theends oft-he body s'ection, s id basesection forming a removable topfork-said cavity;

14: A' mold comprising a bodyisectionprovidii ig opentop molding" cavity, and-a reinovable,-'*one-piece gate section including a for seating incand x i-macabre top, for said cavity, vthe side walls of said slot; being oppositelybeveled. "15." flnioldcomprisinga body section pro- .vidingairopen top molding cavity, aremovablegone-p'iecd gatesection including a funnel slotted base part for seating in and upon the base section and a funnel shaped part for seating on the top edges of the ends of the body section, said base section forming a removable top for said cavity, and said base section having its lower face formed with oppositely extending beveled portions mergin g into the side walls of said slot.

16. A mold comprising a body section providing an open top molding cavity, a removable, one-piece gate section including a funnel Matted part for seating in and upon the base section and a funnel shaped part for seating on the top edges of the ends of the body section, said base section forming a removable top for said cavity the side walls of said slot being oppositely beveled, and said base section having its lower face formed with oppositely extending beveled portions merging into the side walls of said slot.

17. A mold comprising a one-piece body section providing an open top molding cavity and rabbeted on its inner face to form shoulder below the top edge thereof, and a removable one-piece gate section including a lengthwise slotted base part having a part of its lower -face flat for seatin on said shoulder and the remaining part or its lower face of the body section.

bordering the slot and being oppositely beveled, and said gate section further including a funnel shaped 11 per part registering" With the. slot, of greater length than said base part and seating upon the top edges'of the ends 18. A mold comprising a one-piece body section providing an open top inolding cavity, and a one-piece gate section reinovably seating upon the inner face of the body section in proximity to the top edge of the'latter and reinovably seating upon said top edge, said gate section having a central slot forming a gate opening, and said gate'se ction having part thereof forming avrei n'ovable' top wall for the top of the molding cavity and With said Wall positioned below said top edge. 4 I

19. A inold comprising a one-piece body section providing an open top molding cavity, a one-piece gate section reinovably seating upon the inner face of the body section in proximity t o the top edge of the la tter and reinovably seating uponsai d toppdge,

said gate section having a central slot form ing a gate opening, said gate section having mg a, removable top Wall I I f theinoldingcavity and vvith i a part thereof forini for the top 0 said Wall positionedibelow said top edge, and said gate section formed of a base part and a top part, the latter being of greater length and of less Width than the former and of greater length and of less idth than said body section, said base part being housed by said body'section. 7

In testimony whereof, I affix my signature hereto.

FRANK \V. FOLEY 

